Control shutter for engine radiators



Feb. 23, 19280 D. M. WINANS CONTROL SHUTTER FOR ENGINE RADIATORS 2 $heets$hee1 1 Filed June 21, 1926 INVENTOR.

4 DANIEL M. WINANS f \QM/W/ ATTORNEY Feb. 21, 192&

D. M, WINANS CONTROL SHUTTER FOR ENGINE RADIATORS 2 Sheets-Sheet 2 Filed June 21, 1926 dim,

DANIEL MWINANS INVENTOR.

ATTO RN EY l again operate in umson;

Patented Feb. 21, 1928.

UNITED 'STAT ES PATENT OFFICE.

DANIEL M. WINANS, OF BINGHAMTON, NEW YORK, ASSIGNOR TO THE BREWER- TITCHENER CORPORATION, YORK.

OF CORTLAND, NEW YORK, A. CORPORATION OF NEW CONTROL SHUTTER FOR ENGINE RADIATOR/SJ Application filed June 21, 1926. Serial No. 117,287.

This invention more particularly relates to improvements in manually-operated dashcontrolled shields or shutter fronts as applied to air-cooled radiators for motor vehicles, especially such in whicha supplemental shutter supporting frame is adapted forconvenient attachment to or removal from the engine radiator without requiring constructive changes in existing'cars. One of its objects is to provide a simple, durable and compact apparatus of this character by means of which the temperatureof the m0- tor jacket water may be regulated by air flow control through the radiator core openings and thus maintain the engine under better winter operating condition and guard against freezing of the engine cooling'medi- A further important object is to provide for simple and improved means to selectively close and cut off the air draft through the bottom half of the radiator core passages where incipient freezing is most likely to occur. The plural shutters ofthe present device have therefore been divided to operate in distinct sections or groups, and these are each cquipt with independent but interlockable manipulating tie-bar means embodying certain. improved clutch-like devices of the slip type adapted to couple or uncouple said bars and regulably actuate said shutter sections in different combinations. Said tie bars are preferably disposed to lie in substantial vendwise alignment and the adjoining ends thereof are made to cooperate by means of a detachable clutch device in such fashion as to bring about synchronous movement between sai'd bars and to interrupt such com'-- mon movement at will. If desired, all of the shutters may be made to close simultaneously but when expedient the upper slat section may be kept operative while the lower group of shutters is detached therefrom and is left standing in closed position for the purpose of better protecting the lower portion of the radiator against freezi'ng in extremely cold weather. Said detached lower shutter section may however be re-engaged at will by manipulating my improved control mechanism from the vehicle seat in order to make all the shutters in this respect the present invention represents "a modified mode of operation over that disclosed in my co pending application Serial No. 112,771,

.plied to the slat setting in Fig. 4 represents a similar enlargementas ap= filed June 1, 1926. Improved distant control means are also herein provided for conveniently and effectively adjusting the slat POSltIODS'tO meet various changes in atmospheric or road travel conditions, and when all the shutters are kept fully closed, this allows the cooling system to warm up more rapidly upon starting the motor.

'To this end and the accomplishment of other new and useful results, the invention further consists in novel constructive features, combination and arrangement of its several parts, all of which will hereinafter be more fully described.

Reference is had to the accompanying two sheets of drawingswhich are illustrative of a specific embodiment of my invention as applied toa motor radiator, in which like characters of reference indicate like parts, and in which drawings z- Fig. l a vertical elevation taken in par tial section to show the general arrangement of my shutter frame as applied to the front face of an automobile radiator and also the hand-operated actuating devices of which the control is carried up to the instrument board of the vehicle.

Fig. 2 represents an elevational rear view of my assembled shutter frame showing the upper group of slats standing in open position while the bottom slat group is disengaged and thrown into its inoperative or closed position.

Fig. 3 is a sectional view as taken along line 33 of Fig. 2.

Fig. 4 is an enlarged partial detail of the tie-bar arrangement and trip device as ap- 2, while Fig.

plied to Fig.5.

Fig. 5 is an elcvational view of my assembled shutter frame similar to Fig. 2 except that the actuating bar for the upper groups of slats is now hooked into engagement with j the lower tie-bar so as to close the lower slat section in unisonwith the upper section.

Fig. 6 is a sectional view as taken along line 6 6' of Fig. 2.

Fig. 7 represents an elevatioual side view taken in section along line 7- 7 of Fig. 8 showing screw actuated distant control devices for adjusting the shutter slats as applied to the. instrument board of an automobile.

Fig. 8 is a bottom View of Fig. 7 taken in partial section along line 88 thereof to better indicate the arrangement of my control lever and its actuating gear.

Fig.9 shows an elevational front view of Fig. 7 and is illustrative of my pointer and dial device for indicating the shutter setting.

Fig. 10, is a side view of my tie-bar in tended to bring out certain novel constructive features thereof.

Fig. 11', is a sectional view as taken. along line 101O of Fig. 10.

Referring more particularly to said drawings,A denotes a motor vehicle radiator tank or casing which circumscribes a honeycomb or other cellular core A said core being preferably provided with a plurality of rather closely spaced horizontal air flow openings spaced side pieces B and B preferably of cross-sectional Z shape-d profile, the respective ends of which pieces may be cross connected by integral top and bottom end pieces of similar'profile, such as B and B This hollow housing structure may further comprise an outwardly disposed brim portion B inscribing the upstanding web pieces of the aforesaid Z shaped members while the respective inwardly disposed leg pieces thereof preferably form a continuous flat open face B, which is spaced from and lies substantially parallel to the plane of said brim.

Removablyefitted against each inner face of the respective side pieces by means of suitable bolts 0, or the like,-is inserted a slat rack C and this rack is provided with a series of spaced trunnion apertures or bearings such as C G etc. The disposition of said racks is indicated in the frame assembly Fig. 2 and it will be observed that in this preferred illustrative disclosure, there have been only two groups of damper slats or shutters provided, namely an upper slat group or, distinct sectional unit preferably comprising the consecutive slats D D etc., and a lower slat group or distinct sectional unit comprising the consecutive slats D D etc, the respective trunnions thereof being rotatably mounted in the apertures C G etc. of said complementaryslat racks. Each such shutter group may be provided' with independent tie-bar linkages so that the respective sections may be separately manipulated in the manner presently to be described from which it will become obvious that the same underlying offset marginal L shaped stifl'ening rib or bead D disposed along the outer swinging edge'of the slat while the opposite longitudinal edge thereof maybe rounded into a tubular shape tangentially disposed out of the fiat face of the slat and made to terminate in trunnions overhanging the respective slat ends. When closed, the ofiset swinging edge of one slat may be madeto substantially abut the outer surface of the adjoining tubular trunnion portionof the next adjacent slat in the fashion indicated by the lower closed section in Fig. 2; it will be further observed that the slats are kept relatively narrow to admit of opening them inward toward the radiator core face. but

without interference therewith.

The complementary 'demountable slat racks such as C, may be snugly inserted and nested within the oppositely disposed side pieces 18, and B of the supporting frame. One of the transverse slat edges may further be equipt with an actuating arm D initially stamped out integrally therewith and then bent up in a normal relation "to the slat face as indicated. Each such arm D, is-provided with a perforated hole or reenforcing boss.

D freely fulcrume d to a common tie-bar and operated thereby.

As shown in Fig. 11, my tie-bars such E or E further embody certain novel cgnstructive features' in that either may be equipt with spaced integral tubular trunnions such as E E etc., which tubes may be formed directly out of the side bar stock and adapted to fit into the aligned spaced holes D of the respective slat arms D, to pivotally actuate the same. In order to hold said trunnioned tie-bars in place against lateral trunnion displacement, certain bearin s of each tie-bar may be equipt with a heat ed tubular rivet as indicated .m'

Fig. 11, or if preferred, all of the trunnions may be made in tubular fashion and some particular hearing or bearings of this type may have a headed bolt or split rivet inserted therethrough for lateral securing other. If desired, both slat sections may a drift piece E also be operated simultaneously from a single actuating cord or cable A and to this end, the slats D D etc., making up the upper section, are connected together through the upper tie-bar E which imparts a common pivotal movement to about their respectivetrunnions and cause them to be held in any desired fixed pivotal position. I11 alike manner, the slats 1),, 1);, etc., comprising the lower section, are connected together through a separate lower tie-bar E which similarly actuates in unison'all the slats D D etc. The adjacent end portions of the respective tie-bars are made to overlap for co-operative coupling purposes. It will be observed that said tiebars are arranged in a substantially aligned tandem relation and that the adjacent ends of the bars proper are kept sufficiently ing abutment E spaced to allow of independent movement without interference between these straight bar portions when oppositely rocked into either of their respective extreme positions. One of these tie-bars carries an offset hookended extension member such as IE adapted to span or bridge the adjacent end of the complementary bar and maintain a slidable overlapping relation with respect" to said other bar end, and the indicated slip type of coupling is preferably disposed between said overlapping bar portions.

Accordingly, the lower portion of the upper tie-bar E has been outwardly offset at E," and preferably fashioned into a depending trip arm E The extremity of this arm may be bent inwardly into the grab hook of which the short upturned hook end is in the present disclosure also utilized as The lower tie-bar E is on the other hand extended upwardly with its outer face arranged to ride alongside the overhung free edge of said grab hook or drift piece E, as shown, with the upper extremity of said bar E bent outwardly to constitute the lift hook E and this may be coupled to the said grab hook to function as a detachable clutch-like member. In the adjusted slat positions applying to Figs. 2 and 3, all of the upper slats of the section D have nearly reached their fully open position while the lower slat section still stands closed and is locked in this position by latch means as will appear presently; as a consequence, the grab hook E will have been lowered with respect to its uppermost position shown by dotted lines in Fig. 4 and this brings about limited freedom or slip action between the hooks E measured-by the gap distance X. Should the lower slat section now be unlatched and allowed to open, this will cause the lift hook E to come into. engagement with the grab hook E and take up'said gap or play X, whereupon the lower slat section becomes coupled to the upper slat section and maybe all such slats carried back into closed position in unison therewith. When both shutter sections have reached their fully open position, the tiebars E and E 'will then both assume their lowermost coupled positions as indicated in Fig. 4 g

' In the present disclosure, the upper end portion of the lower tie-bar E is further equipt with a tripping latch or releasing de-' vice comprising two interlocking members of-which one such-is made to move in unison with one of the tie-bars while the other member may be fixedly mounted upon a suitable frame portion. .As herein exemplified, a beveled catch member E,,.may either be secured to or struck up from said bar E and said catch may be provided with an inclined side face E, arranged with a bottom toe face having a protrusive knife edge or locksaid toe being preferably so placed that when the grab hook E, as-

sumes ,its lowermost position, it will not reach said locking edge.

Cooperating with said toe knife edge is a latch spring la or its equivalent which in the present instance is shown as fashioned from resilient fiat stock of which one end portion may be secured to the stationary rivet post C and is made removable with the slat rack 0,, while the other latch spring end may be shaped up into an overhanging locking trigger E which issprung outwardly from said rack and adapted to exert a side thrust against the tie-bar member E The disposition of said trigger is preferably such that it will automatically drop under the knife edge E whenever the tie-bar E reaches its uppermost position, that is to say every time the lower slat section D is -brought, into substantially closed position.

This condition is represented in Figs. 2 and 4 and it will be seen that the trigger E is now interlocked with the knife edge E and that said lower slat section cannot again be opened until this latched engagement has been released or tripped it being apparent that the elements E and E together constitute a latch mechanism.

In the present improvements, such disengagement of my latch or locking device is preferably accomplished by the relative actuating displacement set up by movement on part of A tie-bar E is latched or locked in place. This in turn, causes the short drift pieceIE, to move toward or away from the engaged trigger E in order that said trigger may be more readily. withdrawn out of locked engagement from the knife edge, two complementary wedge faces may be resorted to, namely E of the latch and'E of the latch spring, which are set to converge toward a common point for the purpose of forming a unitary wedge element into which the drift piece E i is adapted to enter and such coopthe upper tie-bar E, while the lower Lil crating wedge elements in turn constitute my latch .trippingdevice. As a result, said wedge action will serve to release said latch trigger device whenever the upper slat section D is allowed to approach its fully open position while the bottom slat section D still remains standing in closed position.

For the purpose of imparting an automatic opening to the released lower slat section D its tie-bar E is preferably provided with an overhung pin E adapted to "engage a hook end of the helical spring E or other suitable resilient tensioningmeans, while theother end of this spring may be attached to the fixed post 50 preferably riveted into the inserted slat rack C and also made removable therewith. stretched between said spaced pins E "and C and made to exert a substantial opening tendency on part of all the shutters making up the lowermost slat section. lln a similar manner, the upper tic-bar E is oquipt with a separate spring F, of which one end is secured to the stanchion 1Q" while the other spring end may be fastened to the overhung rack post 0 as shown to constitute tension means urging this upper set of slats into open position.- J

Attached to the upper end of the tie-bar E through the stanchion E or otherwise, is

a flexible cable A or other suitable actuat ing means which extends upwardly and runs over the guide pulley C the.latter being preferably secured to one of the racks .by means of the bracket C as shown in Fig. 2 and made'removable therewith. Said cable A, may then be carried laterally and run back to the vehicle instrument board A through an adjustable turn buckle A in the mannerindicated in Fig. 1, which leaves the free 'end of said cable conveniently operable from the drivers seat, through the use of my distant control devices. i

As detailed in Figs. 7 and 8, such distant shutter control device preferably comprises a stamped forked clamp portion having spaced jaws F and F adaptedto straddle said board A, and secured thereto by means of a lock screw F or the like. Said clamp may further beequipt with two similarly spaced depending lugs F and F which may be tied together in any suitable manner but preferably by a web or body plate F To Said spring may be initially.

i ecaiae screw is preferably made to turn through a suitable aperture F formed in the depending clamp lug F said screw threads are adapted toengage with the upstanding leg of an L shaped swivel link F while the other link leg is pivotally secured upon the longer lever arm F, by the pin F this pin being offset from the fulcrum F and posltioned to align with the shankF of the thumb screw R as shown. said screwshank thrusts against and is adapted to turn upon the oppositely disposed clamp lug F as indicated in Fig. 7.

When the thumb screw F is adjustably set against cable tension, this will move the upstanding leg of the link F away from said lug F and ultimately turn the bell-crank lever ll about its fulcrum F into the extreme dotted position denoted as Y in Fig. 8.

Conversely, by unscrewing the adjusting member E the lever F, may be brought into its opposite extreme position denoted as Z. It will be obvious that such manipulation of the screw F adjustably turns the pivoted bell-crank and thus exerts a suflicieutly strong take-up pull upon the cable The extended free end of the A to lift the top end of the tie-bar E and thereby open the upper slat section against the resistance of its relatively stifi spring E on the other hand when the lever is allowed'to recede, said stiff spring will cause said shutter slats to close with certainty.

It is preferred to separately maintain a sufiiciently strong and vigorous closing tension upon each of the tie-bars E and E in order to be able to hold the slats in any desired adjusted position against high wind disturbances or the. like. The mechanical advantage gained by my screw adjusting means not only allows of making the re quired adjustmentiwith ease, but serves to impart a delicate Vernier-like control that accurately sets the shutters in any desired position, all without being obliged to resort to step-wise or similar coarse slat regulation. llt may be further pointed out that as applied to the described linked grouping of plural slats into sectional units, my adjust ing screw R, by actuating the intermediary cable A through said multiplying lever F does not need to make an inordinate number of turns to effect successive full slat opening from their closed position, such as would otherwise be required were each individual slat opened in successive order.

F or the purpose of visually indicating or registering the adjusted slat position of my shutter front at the distant instrument board control as used in connection with my improved screw devices, I provide for a dial plate F preferably embodying a sector-like shape as shown in Fig. 9. This plate may be radially mounted with respect to the ad justing screw F and fixedly secured to trim the outer face of the aligned jaw and lug members F and F Furthermore, the dial may serve as a name plate and may be graduated with suitable indices to designate the corresponding slat adjustments, the pointer F being used to cooperate with said plate and indicate the prevailing slat setting. My pointer actuating mechanism is such that the indicator oscillates through a single stroke or swing to maintain slat registry while the adjusting screw F is permitted to make more than one turn in moving the shutters between their open and closed positions.

Said pointer is preferably interlocked to respond to the swing of the control lever F and in the present instance, such coordinated movement is carried out by means of a rack and pinion mechanism. The rack F may be transversely disposed with respect to the axisof the adjusting screw F and mounted in any suitable manner to slide along the bottom face of the body plate F A bored pinion F adapted to freely surround the shank of said'screw, is provided with an extension'sleevedike bearin member F that projects through and is rotatably mounted in the lug aperture F to allow of independent movement between these telescoped parts. The pointer F is secured to the free end of said pinion extension and adapted to oscillate as a'fulcrum thereon. One end of said rack F is provided with a rack slot F adapted to engage the rounded knoblike extremit of..'the short bell-crank arm F and reciprocate said rack in unison therewith. Hence any rocking of the lever F in turn swings the pointer F into an indicating position that correctly registers the adjusted setting of the upper shutter slats and allows of unrestrictedly turning the adjusting screw without sacrificing the desired visable registry at the drivers seat of prevailing slat position. The pointer not only positively responds to the setting. of the upper shutter section, novel purpose in that the operator is thereby enabled to avoid unintentional opening of the lower shutter section "which latter opening is not intended to occur until after the pointer has approached a predetermined dial position preferably lying adjacent to' and ahead of extreme openmg travel of the pointer.

It is further pointed out that a stop nut F may be provided to protect the rack and pinion against any undue binding action on part of the upstanding link member F Said stop unit is preferably jammed against a shoulder formed at one threaded end of the shank F and is mounted intermediate standing link leg to serve as a stop member when the lever F is swung into its extreme position designated Y..

Having described the constructive featherefore, the adjusting screw F but serves a further ,closed slat position tu-res underlying my shutter actuating devices, the manner in which they are intended to function may be traced as follows:

Assuming that for the time being the shuttors are adjustably set into the relation indicated by Fig. 2, the upper'slat section D will then have been almost but not entirely opened; the tie-bar of the lower slat section D will still be standing in locked engagement with the latch trigger E which prevents the spring C from automatically throwing open the lower shutters. It will further be apparent that the pointer will accordingly register intermediate its and full open dial position and the transverse drift piece E will also havestarted to enter between the beveled latch face E and its complementary wedge face E When is still further turned to bring the upper slat section into extreme open position, this willcause said drift piece to complete its descent and finally force the latch trigger E out of engagement with the knife edge E,,, whereupon the lower slat section becomes released and this in turn allows the spring E to unobstructedly act upon said tripped lower slat section and throw the same into full open position. As a consequence, the lift hook E will drop into engagement with the grab-hook E and the knife edge 13], will fall below the trigger E thus allowing both slat sections to assume their full open positions.

Should it now be desired to close both of these slat sections and adjustably actuate all of the shutters in unison, this may be accomplished by manipulating the adjusting thumb screw F so as to draw the pointer back toward its shut dial position. During this operation, the grab-hook remains engagedwith said lift hook, and accordingly the upper tie-bar is made to pick up the lower tie-bar and simultaneously fully close both slat sections against the resisting pull exerted by the common cable A which is then obligedto overcome the combined tension of both tie-bar springs E and E When the lower slat section approaches its fully closed position, the risin beveled latch face B, will push the trlgger E away from the tie-bar E after the full has been reached, the knife edge 13],, will have been raised sufliciently to allow the trigger to fall into engagement therewith and again positively lock the lower shutters in closed position.

It will be apparent therefore that by means of my improved shutter actuating devices, I am enabled to selectively adjust the upper slats into any predetermmed po sition from my distant instrument board control while the detached lower slat section remains inoperate and is locked in place against unintentional opening because of 25 chronized road jars or like causes. Should it however be deemed advisable to augment such limited shutter opening, the discribed latch mechanism may readily be tripped or released by moving said indicator pointer past its wh marking which will allow the lower section to be thrown intoopen position by action of the spring E and thus conveniently attain the full benefit of maximum air 10 flow through the shutters when so desired.

Furthermore, by thereupon drawing the slat sections back toward their closed position, all the shutters are caused to move in synchronism and may at will be given a common setting in the conventional manner. In

case of extremely cold weather conditions, it will naturally be preferred to keep the lower slat section locked in place and work only with the upper slat section. A distinctive feature of the described mode of is the conventional practice with shutters of the interconnected sectional type.

In cor rjunction with the described shut ter devices, it is further preferred to provide efiective means for taking up any undue wear on part .of the slat trunnions and otherwise to facilitate holding the disengaged lower slat section in closed position against any excessive car vibration or jar. Suitable devices of this kind have been ex- 4:0 plicitly set forth in my copending application hereinbefore identified, and they may consist in the use of a continuous strip of flexible material extending transversely across the respective trunnion ends to re- 4 siliently bear thereagainst in a follow-up fashion. 7

It will be understood that various changes in the details and arrangement of my device may be resorted to, such for instance as v utilizing the more conventional control means for operating my shutters from the vehicle seat, ori'the dividing of the plural slats into more than two separate sections and the like, all without departing from the spirit and scope of my invention heretofore described and more particularly pointed out in the appended claims.

I claim 1. In a vehicle radiator shutter arranged to adjust'ably control air flow therethrough,

a frame member provided with a pluralityv of parallelly disposed shutter slats pivotally mounted therein which slats are divided into distinct groups of several slats each constituting separate sectional" units, independent me ias tie-bar means interconnecting the respective slats comprised in each such group, means for simultaneously closing all of said shutter sections, said means comprising coupling members of the slip type acting between said tie bars adapted when disengaged to render a sectional unit inoperative while allowing the remaining sectional unit to operate'normally between itsrespective closed and partially open slat position, and manipulating means adapted to complete the opening of the aforesaid remaining unit and bring about engagement of the said coupling members, whereupon said one unit is again made to close in synchronism with said remaining unit. v

2. In a vehicle radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of parallelly disposed shutter slats pivotally mounted therein which slats are divided into distinct groups of several slats each constituting separate sectional units, independent tie-bar means interconnecting the respective slats comprised in eachsuch group, means for simultaneously closing all of said shutter sections, said means comprising coupling members of the .slip type acting between said tie-bars adapted when disengaged to render a sectional unit inoperative while allowing the remaining sectional unit to operate normally between its respective closed and partially open slat position, manipulating means adapted to complete the opening of the afore said remaining unit and bring about engagement of the said coupling members, whereupon said one unit is again made to close in synchronism with said remaining unit, and

latch means for releasably locking said inoperative unit when brought into its closed shutter position.

3. In a radiator shutter arranged to ad justably 'control air flow therethrough, a

frame 'member provided with a plurality of shutter slats pivotally mounted therein and adapted to move between open and closed positions, said slats being divided into distinct groups of several slats each to constitute separate sectional units, independent tie-bar means for interconnecting the respective slats comprised in each such sectional unit, a looking device including a trigger cooperating with a knife edge member on one of said tiebars to latch said tie-bar in closed slat position, spring means exerting an opening tension upon said one tie-bar, and means for releasing said locking device.

4. In a vehicle radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein which slats are divided into a number of dis tinct groups of several slats each to constitute separate sectional units, independent tie: bar means for interconnecting the respective slats comprised in each such sectional unit, means for actuating said tie-bars, means including a latch device adapted to releasably lock one of said units in closed position, and .5 control means operable from the vehicle seat serving to release said latch device.

5.-In a radiator shutter arranged to ad justably control air fiow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein which slats are divided into a number of distinct groups of several slats each to constituteseparate sectional units, bar means for interconnecting the respec- 'tive slats comprised in each such sectional unit, a latch device adapted to interlock one of said tie-bars with the frame, and control means serving to release said latch device.

.6. In a radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein which slats are divided into twodistinct groups of several slats each to constitute separateup per and lower sectional unlts, ndependent spring controlled tle-bar means interconnect;

ing the respective slats comprised in 'each such sectional unit, actuating means connected to the upper one of said bars, which bars are interconnected through coupling members adapted to permit the upper unit to continue operating while the lower unit remains in operative, latch means for holding said inoperative unit in fixed position, and

distant control means adapted to release said latch atwill.

7. In a radiator shutter adapted to adjustably control air flow therethrough, a frame member provided with a plurality of shutter 40 slats pivotally mounted therein to move between open'and closed positions, said slats being divided into two groups comprising several slats each constituting separate up-' per and lower sectional units, means for 4 successively opening said units, including a I reciprocative tie-bar for each of said units of which one such bar is provided with an extended portion slidably disposed in overlapping relation to the adjacent end of, the

other bar, cooperating means between the respective overlapping end portions of said bars arranged to engage when the slats of both units are similarly positioned but to separate and provide for a gap therebetween 55 when the upper unit' is opened in advance of the lower unit. 8. In a radiator shutter arranged to adustably control air flow therethrough, a. frame member provided with a plurality of 50 shutter s'lats pivotally mounted therein and adapted to move between open and closed positions, said slats being divided into two groups comprising several slats each constituting separate upper and lower sectiona units, independent tie-bar means for each independent tieof said units, tensionmeans urging said slat units into open position, actuating means adapted to adjust the setting ofsaid upper unit in any des red position against the aforesaid tension means, and means for detachably interconnecting said tie-bars to close both units in unison and allow of opening the upper unit in advance of said lower unit. 7

' 9. In a radiator shutter arranged toadjustably control air frame member provided with a plurality of shutter" slats pivotally mounted therein and close both units inumso'n, and co-oper'ating means including alatch device adapted to hold the lower unit in closed slat position until the upper unit approaches its open slat position, whereupon further movement of the upper tie-rod serves to release said latch device and subsequently permits the aforesaid tension means to open said lower unit.

a 10. In a vehicle radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein and adapted to move between open and closed positions, said slats being divided into two groups comprising several slats each constituting separate upper and lower sectional units, independent tie-bar means for each of said units which bars are equipt with an intermediary clutch member adapted to couple and uncouple said bars, actuating means operatively connected to one of said tie-bars and adapted to simultaneously adjust the setting of' all of the slats, distant control means operable from the vehicle seat adapted to bring. about disengagement of said units, and means to lock the lower unit in its closed position while the upper unit remains operative.

11. In a radiator shutter arranged to adjustab'ly control air flow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein and adapted to move between open and closed positions, said slats being divided into two groups comprising several slats each constituting separate upper and lower sectional units, independent tie-bar means for each of said units, actuating means including cooperative clutch-like means disposed between 1 said tie-bars adapted to adjustably set all of the slats into one and the same position, and

flow therethrough, a

for de-.

adapted to move between open and closed each of a control -meansfor disengaging the lower unit from the u per unit to allow of independently actuatmg the latter.

12, In a radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein and.

successively open said units, and a latch de vice associated with one of said units adapt ed to lock the same in closed position. until the other unit has been partially opened.

'13. In aradiator shutter arranged to adjustably control air flow therethrough, a frame member comprising a pair of spaced side pieces having an apertured slat rack secured to each of the respective side pieces, a plurality of parallelly mounted shutter slats of which the respective ends are pivotally mounted in said rack apertures, said slats being divided into two groups comprising several slats each to constitute separate upper and lower sectional units, independent tie-bar means for each of said units, means for successively opening said slat sections and for closing both units in unison, a latch device having a locking edge associated with the lower tie-bar, and a latch member secured to one of said racks and adapted to interlock with said edge when the lower tie-bar is brought into substantially closed shutter position. a

14. In a radiator shutter arranged to ad.- justably control air flow therethrough, a frame member comprising a air of spaced side pieces having apertures t erein; a plurality of parallelly mounted shutters or slats of which the respective ends are pivotally mountediin said apertures, said slats being divided into two groups comprising several slats each constituting separate upper and lower sectional units, independent tie-bar means for each of said units, means for m ving the aforesaid slat; sections between then respective open and closed positions, a latch device provided with a locking edge associated with the lower tie-bar, a latch member mounted upon said frame and adapted to interlock with said ed e whenever the lower unit is brought into su stantially closed shutter position, and means movable with the upper tie-bar serving to release the aforesaid latched unit whenever said tie-bars are i moved toward each other into predetermined relation.

15. In a radiator shutter arranged to'adme ias vice provided with a locking edge associated with the lower tie-bar, a latch member secured to one of said racks and adapted to interlock with said edge whenever the lower tie-bar is brought into substantially closed shutter position, and means movable with the upper tie-bar serving to release said latch member when said tie-bars are moved toward each other into predetermined relations, said plural slats and the tie-bars together with the aforesaid latching mechanism beingmade removable with said demountable racks.

16. In a radiator shutter arranged to ad- I justably control air flow therethrough, a frame member provided. with a plurality of shutter slats pivotally mounted therein to move between open and closed positions, saidslats being divided into two distinct groups of several slats each constituting separate sectional units, independent spring controlled tie-bar means for interconnecting the respective slats comprised in each such sectional unit, intermediary clutch members adapted to couple and uncouple said bars to render one of said units inoperative while the other remains operative, cable means attached to one of said bars and adapted to open said operative unit against spring tension, latch means for releasably locking said inoperative unit into closed shutter position, a distant" control device operatively connected with said cable and adapted to selectively set said operative sectional unit into desired slat opening, a poihter interconnected to swing in unison with and register said slat openings, and means for releasing said latch whenever said a predetermined position.

17. In a shutterfor an automobile radiator front arranged to be adjustably controlled from the drivers'seat, a frame memher provided with a plurality of shutter slats pivotally mounted therein and adapted to move between open and closed positions, and slats being divided into two groups constituting separate sectional units, independent tie-bars interconnecting the respective slats comprised in each such unit and which bars are equipt with intermediary coupling members adapted to allow of opening one unit in'advance of the other, a

pointer approaches 7 distant control device including a lever and a cooperating self-locking adjusting screw located rearwardly of the radiator in juxtaposition to the drivers seat, said lever being operatively connected with said shutter and adapted to selectively set the first opened of said slat units, a pointer means adapted to swing in unison with said lever and indicate the prevailing slat setting, and a dial plate indexed to register the approximate position where further pointer movement will result in opening the other of said slat units,

18. In a shutter apparatus adapted to con trol airflow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein to move between open and closed positions,'said slats being divided into groups or several slats each, independent tie-bars interconnecting the respective slats comprised in each such group and which bars are equipt with intermediary coupling means adapted to allow of opening one such group in advance of another, a selfloclring screw means for selectively setting said slats, said screw turning through more than a single revolution between extreme slat positions, and an indexed pointer means oscillated by said screw adapted to register the prevailing slat position of the first opened shutter group and signify where the next succeeding shutter group is intended to open,

19. in a shutter apparatus for an automobile radiator. adapted to control airflow om the driver s seat, a frame member provided with plurality of shutter slats pivotally mou: tee. therein to move between open and closed positions, said slats being adapted to be opened successively, a self adjust the first opened slat from closed into open position by turning the screw more than one revolution, and a pivotally mount-- ed indexedpointer means geared to rockin one and same direction while turning the screw through the aforesaid plural revolutions, said pointer serving to register the prevailing slat position and signify where the next succeeding slat is intended to open.

20. In a shutter apparatus adapted to control airflow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein to move between open and closed posit-ions, said slats being divided into groups adapted to be opened successively, a self-locking screw means adapted to selectively set the slats said screw means comprising a rockable lever provided with a swivel link and a cooperating screw adapted to turn through more than one revolution to-move the lever from one into the other of its' extreme rocking positions, and

the drivers seat, a frame member provided with a plurality of shutter slats pivotally mounted therein to move between open and closed positions, said slats being divided into groups adapted to be opened successively, means exerting an opening tension on certain-of said slats, cable means reaching rearward of the radiator for manipulation from the drivers seat serving to actuate said slats and close the same against spring tension a screw control device com prising a rockable lever operatively con nected with the rear of said cable and a co operating screw adapted to selectively roclr the lever, and an indexed pointer means geared to rock in unison with said lever to register the prevailing slat position of the first opened shutter group and signify where the next succeeding shutter group is intend ed to open. e

22 In a shutter apparatus for an automobile radiator adapted to control air *ow from the drivers seat, a frame member g ovided with plurality of shutter slats pivotally mounted therein to move between on and closed positions, said slats being 2M1 ed to open successively, cable means reaching rearwardl actuat said l positions, a screw witliin reach of said comprisin a roclrable lever 'th rea of said cable tolink engaged and clos ce disposed connected gether M by screw for selectively setting lever, said screw being adapted to maize said pointer being rocked through in single stroke by the aforesaid plural screw turns to register the prevailing slat position of the opened shutter slat and signify where the next succeeding shutter slat is intended to open, and stop nut means interposed between said linlr and the pinion for the purpose specified 23. In a radiator shutter adapted to ad.- justably control airflow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein to move between open and closed positions, said slats being divided into groups, and control means of the slip type adapted to open said groups in successiveorder and to automatically pick up and normally close said groups rmanipulation "from the drivin substantial unison, the slats in all of said groups being maintained in substantial coincident parallel relation during their entire closing movement.

24;. In a radiator shutter adapted to adjustably control airflow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein to move between open and closed positions, said slats being divided into groups, and means for successively opening said groups and for closing them in substantial unison, said means comprising a coupling of the slip type.

25. In a radiator shutter adapted to adjustably control airflow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein to move between open and closed positions, said slats being divided into groups, and means comprising a coupling of the slip type for successively opening said groups and for fully closing them in substantial unison, and a latch means which holds one of said groups closed while the other group remains inoperative.

26. In a radiator shutter adapted to adjustably control airflow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein to move between open and closed positions, said slats being divided into groups, means comprising a coupling of the slip type for successively opening said groups and for closing them in substantial unison, and a latch which holds one of said groups closed, the aforesaid coupling being adapted to release said latch and allow said one group to open subsequent to the opening of another group of slats. I

27. In a radiator shutter adaptedito control air-flow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein to move between open and closed positions, said slats being divided into two groups comprising several slats each constituting sectional units, separate complementary tie-bar means for each of said units, said complementary bars bemg arranged in tandem and the adjacent ends thereof being kept spaced to rock in a reciprocative relation about their respective slat pivots, and centralized control means for normally opening said units in fixed successive order from their respective closed slat positions, said means including an intermediary extension element reciprocated by one of said tie-bars and maintained in an overlapplng bridged relation with respect to the adjacent end portion of the complementary tie-bar, there being a coupling means of the slip type provided to interlock said tie-bars and limit the separating movement thereof while the slats are being closed but allowing of unobstructe'dly augmenting said overlapping relation of said bridging element when one of said units is opened in rate complimentary tie-bar means for each of said units, said complementary bars being arranged in tandem and the adjacent ends thereof being kept spacedv to rock in a reciprocative relation about their, respective slat. pivots, spring means for each of the sec tions urging the respective slat units into open position, and centralized control means for bringing said units into closed position against spring tension and for allowing said spring means to successively return said units into their respective open positions in fixed sequence, said control means including an intermediary extension element reciprocated by one of said tie-bars and maintained in overlapping bridged relation with respect to the adjacent end portion of. the complementary tie-bar, there being provided a releasable coupling means of the slip type for interlocking and limiting relative movement between said tie-bars during the closing of the slat units while upon release of said coupled tie-bars, one of the spring means is allowed to open its sectional unit in advance of the other unit.

29. In a shutter apparatus for an automobile radiator adapted to control airflow therethrough, a frame member provided with a plurality of parallel shutter slats pivotally mounted therein to rock between open and closed positions, said slats being divided into two groups comprising several consecutive slats each, constituting separate sectional vunits, tie-bar means for each of said units of which the adjacent bar ends are kept spaced apart and interconnected by tie-means of the slip type to allow of opening one such unit in advance of the other, and shutter manipulating means including indicating means which latter means is adapted to register the prevailing slat position of the first opened unit and is provided with a critical marking serving to visualize where further manipulation is intended to open the other of said units, the aforesaid means being mounted rearward of the radiator in juxtaposition to the drivers seat and having an operative connection with one of said tie-bars.

30. In a shutter apparatus for an automobile radiator adapted to control airflow therethrough, a frame member provided with a plurality of parallel shutter slats pivotally mounted therein to rock between open and closed positions, said slats being kept spaced apart and intenconnected by tiemeans of the slip type to allow of opening one such unit in advance of the other, latch means adapted to hold closed one of said units while the other is being opened in advance thereof, and manipulative control means operatively connected with said shutter units and which means includes a device for registering the prevailing slat position of the first opened unit, said device being provided with, a marking to visualize a vcritical control point beyond which further manipulation of said control results in opening the other of said units. 1

31. In a radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein, spring controlled tie-bar means serving to operate said slats in unison, cable means adapted to actuate said bar and close said slats against spring tension, and a distant control device comprising a body member provided "with a fulcrumed lever of which the operative end is connected with said cable, swivel link pivoted to said lever intermediate the ends thereof, and means includin a self-locking adjusting screw adapted to cooperate with said link for selectively setting said lever and to correspondingly position said slots 32. a radiator shutter arranged to adjustably control air flow therethrough, a. frame member provided with a plurality of shutter slats pivotally mounted therein, spring controlled tie-bar means serving to operate said slats in unison, cable'means adapted to actuate said bar and close said slats against spring tension, a distant control device comprising a body member equipt with spaced lugs of which one such lug is apertured, a lever disposed between said lugs and fulcrumed said body while the operative lever end is connected to said cable, shaped swivel link of which one leg is pivoted to the lever intermediate its fulcrum and said operative lever end while the other link leg is provided with a threaded hole, and an adjusting screw having a threaded shank extending through both said apertured lug and said threaded link hole to thrust against the other of said lugs, said screw serving to swing said lever about its pivot and selectively fin the setting of said slats between their open and closed position.

33. In a radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein,

slats against spring tension, a distant spring controlled tie-bar means serving to as operate said slats in unison, cable means adapted to actuate said bar and close said slats against spring tension, and a distant control device comprising a fulcrumed bell crank lever of which one arm is operatively connected to said cable, meansincluding an adjusting screw adapted to selectively set said lever for any desired slat opening, a pivotally mounted pointer means equipt with a pinion, said pointer being adapted to visually indicate adjusted slat positions,

and a rack actuated by' the other arm oi? ,said bell-crank serving to rotate said pinion and cause the pointer to register lever movements by said pointer. ell

34. lln a radiator shutter arranged to adjustably control air flow therethrough, a frame member provided with a plurality of shutter slats pivotally mounted therein, spring controlled tie-bar means serving to 05 operate said slats in unison, cable means adapted to actuate said bar and close said slats against spring tension, a distant control device comprising apertnred lug and a fulcrumed bell crank lever having one arm thereof connected to said cable, adjusting screw entered through the lug aperture and adapted to swivelly engage one lever arm, a bored pinion provided an extension sleeve telescoping the ing screw shank, a pointer means secured to said pinionsleeve and serving to register theprevailing slat settings, and rack means engaging said pinion, said rack bei disposed transversely of the screw a s adapted to be actuated by the other a -i the bell-crank lever, 35. In a radiator shutter arran ed to justabl v control air flow theretnrou frame member provided with aplurai shut slats ,pivotally mounted tb spring controlled tie-bar means ser operate said slats in unison, cable adapted to actuate said bar and clos trol device comprising spaced lugs or w one such lug is apertured, a iulcrumed crank lever disposed between said having one arm thereof connected to sa cable, a swivel link pivoted to said one lev arm, an adjusting screw entered through said lug aperture and adapted to said swivel link, a bored pinion mounted telescope the shank of said screw, means meshing with the pinion, said rack being actuated by the other arm of the belt crank lever, pointer means serving to register pinion movements, and a. stop nut for said screw, said nut being interposed between link and the pinion.

ln testimony whereof, l have herewith set my hand this 18th day of June, 1926, DANIEL M. W'INANS.

Patent Ne, i,eta,i%.-

v Granted February 211, i928, te

DANIHEEL it. WHNAN8.

it ie hetehy eettitieti that em-ea appears in titeptitited speeitieetieit et tine ebeve numbered patent requiring eet'teetieit at teiiewe: Page 8; time 1%, eieittt i7 tea the were "anti" tread "said"; page N,- iines 25 and 2e, eiaim Z tet tine Went "imperative" teeti "operative"; and that tite seiti iLettets Patent etteitiei the read with these eetreetiene therein that tine same may eetttetm te tine teeettlet time ease in the Patent @tt'iee. V I

Sigtietieitd seated this let day (it May, A. i928.

4 it. i. Memes.

" (QSeai) I Acting Geieeiettet et Fetettteo CER'EH E GAEE QQRRECTWN,

Patent No. 1,66%146. February 21, 1928, to

DANIEL WHNANS.

It is hereby certifiiafl that error appears in the p imefi s wcifi catiml of the above numbered patem requiring cnrreciien as faimws: Pzigfi 8, Him 124%, claim 17, Mr thf; WML "and" marl "said"; page 1%), Hm and 236, @Eaimlfs', for the word "inoperative" mad "mmmtive"; and mm the Lffff5 Fmm: should be read with these mrresticns isfiserein that he sam may mnfarm m the record of the case in the Pate-m Gfiice.

Signed and seeded this 1st day 62f May, A. D. 3928.,

ML J. MOUM, (Seal) Acting Cummissimmr of Patents. 

